The Rolex GMT-Master II "Batman" earns its nickname from the black and blue ceramic bezel that debuted on ref. 116710BLNR in 2013 — a combination that collectors immediately likened to the Dark Knight's color palette. The Batman was the first GMT-Master II in steel to feature Rolex's proprietary Cerachrom ceramic bezel with two distinct colors, a manufacturing achievement that required a new production technique to achieve the precise boundary between black and blue in a single ceramic piece. The ref. 116710BLNR on Oyster bracelet was produced until 2019, when it was updated with the new-generation ref. 126710BLNR on the Jubilee bracelet — instantly dubbed the "Batgirl" by collectors who noted the softer connotations of the new bracelet. Both generations remain highly sought on the pre-owned market, with the original Batman on Oyster carrying a devoted following among those who prefer the sportier bracelet. The Batman's black and blue dial and bezel combination is considered one of the most wearable and versatile GMT-Master configurations. DeMesy & Co. in Dallas has been sourcing and authenticating pre-owned GMT-Master Batman and Batgirl references since 1987.